Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/MD/ROYAL-OAK

Royal Oak ZIP code, Maryland

The ZIP code for Royal Oak, MD is 21662, and its area codes are 667 and 410.

USPS city name
1 ZIP code
Population
546
Area codes
667, 410

NANPA lists no telephone rate centre for Royal Oak itself, so these are the area codes of the nearest one, Oxford (4.1 miles). A town on an area-code boundary can differ from its neighbour.

Royal Oak in numbers

About 546 people live in Royal Oak, in 217 households. The median household income is $137,404 a year, 33% above the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $1,107,100 (2.6 times the Maryland median).

Population546Royal Oak546
Households217Royal Oak217
Median household income$137,404Royal Oak$137,404Maryland$103,678US $80,734
Median home value$1,107,100Royal Oak$1,107,100Maryland$419,900US $332,700

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the ZIP code addressed as Royal Oak. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Royal Oak

ZIP codes with the USPS city name Royal Oak
ZIP City Type Population Median income Median home
21662 Royal Oak , MD Standard 546 $137,404 $1,107,100

Map of Royal Oak ZIP codes

21662

The ZIP codes of Royal Oak, MD, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Royal Oak

The nearest larger towns are Oxford (706 people, 2.6 mi), St. Michaels (1,240 people, 5.3 mi) and Tilghman Island (741 people, 7.4 mi).

Towns near Royal Oak
TownPopulationDistance
Easton 17,308 8.2 mi
Cambridge 13,152 12.9 mi
Grasonville 3,564 16.8 mi
Chester 4,797 17.6 mi
Shady Side 4,727 18.9 mi
Deale 5,333 19.0 mi
Hurlock 2,819 19.0 mi
Stevensville 8,802 19.1 mi
Chesapeake Beach 6,456 19.1 mi
Mayo 8,694 21.3 mi
Owings 2,643 21.7 mi
Annapolis Neck 12,032 22.2 mi
Federalsburg 2,837 23.1 mi
Denton 4,936 23.3 mi

More nearby: every ZIP code in Talbot County · Maryland ZIP codes

Cite this page

zipcodes.pro. “Royal Oak, MD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/md/royal-oak

Underlying data is public domain or openly licensed — sources, vintages and licences.